WGHW80 PHFO 201800 FLSHFO Flood Advisory National Weather Service Honolulu HI 800 AM HST Fri Mar 20 2026 HIC003-202100- /O.NEW.PHFO.FA.Y.0062.260320T1800Z-260320T2100Z/ /00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Honolulu HI- 800 AM HST Fri Mar 20 2026 ...FLOOD ADVISORY IN EFFECT UNTIL 11 AM HST THIS MORNING FOR THE ISLAND OF OAHU IN HONOLULU COUNTY... * WHAT...Flooding caused by excessive rainfall. * WHERE...The island of Oahu in Honolulu County. * WHEN...Until 1100 AM HST. * IMPACTS...Minor flooding on roads, poor drainage areas, and in streams. Ponding of water in urban or other areas is occurring or is imminent. Rapid rises in storm water channels and drainage ditches are possible as well. * ADDITIONAL DETAILS... - At 757 AM HST, radar indicated heavy rain moving over the south and east portions of Oahu. Rain was falling at a rate of 1 to 2 inches per hour. Additional areas of heavy rain are expected to move over the area for the next few hours. - Some locations that will experience flooding include... Honolulu, Waipio, Moanalua, Halawa, Salt Lake, Aiea, Kalihi, Pearl City, Ahuimanu, Iroquois Point, Manoa, Kahaluu, Kaneohe, Waiahole, Waipahu, Waikele, Palolo, Maunawili, Waikane and Ewa Beach. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from streams, drainage ditches and low lying areas prone to flooding. && This advisory may need to be extended beyond 1100 AM HST if flooding persists. LAT...LON 2147 15783 2143 15779 2147 15779 2147 15772 2146 15771 2141 15773 2134 15769 2131 15764 2126 15769 2125 15772 2126 15773 2127 15773 2125 15783 2129 15787 2130 15790 2129 15796 2131 15797 2129 15811 2140 15818 2150 15783 $$ TS